Function isSourceInstance

_benchmarks/sample_echarts.js:19785–19787

(val)

    }();

    function isSourceInstance(val) {
      return val instanceof SourceImpl;
    }
    function createSource(sourceData, thisMetaRawOption, // can be null. If not provided, auto detect it from `sourceData`.
    sourceFormat, encodeDefine // can be null
    ) {